Film-holder



. C. L. BAMBFHCK.

FILM HOLDER. APPLICATION FILED OCT. 7. 10m.

Patented Sept. 21.1920.

(11421.55 LBAMamcK,

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

1,, I FILM-HOLDER.

Patented Sept. 21, 1920.

Application filed October '7, 1919. Serial No. 329,118.

To all whom itmag concern Be it known that I, CrmnLns L. BAM- BRICK, a citizen of the Dominion of Canada, and a resident of Brooks, in the Province of Alberta, Dominion of Canada, have invented a new and useful Film-Holder, of which the following is a full, clear, and exact description.

This invention relates to an improved film holder which will hold the film in a stretched out condition, and has for an object to provide a construction which will maintain the film in a stretched out condition without danger of creasing while allowing an easy washing thereof or dipping into the developing solution.

Another object of the invention is to provide a holder which is readily and easily adjusted for different widths of films.

A still further object of the invention is to provide a holder with means for receiving a spool from the camera and holding the same in position for feeding the film to the clamping or retaining members of the holders as the film is spread or looped in position.

In the accompanying drawing:

Figure 1 is a top plan view of a holder disclosing an embodiment of the invention.

Fig. 2 is a longitudinal vertical section through the construction shown in Fig. 1, taken on the line 2-2.

Fig. 3 is a transverse section through Fig. 1 on line 3-3.

Fig. 4 is a sectional view through a tank with the holder embodying the invention shown mounted therein.

Fig. 5 is a detail fragmentary sectional view through Fig. 1 on line 55.

Referring to the accompanying drawing by numerals, 1 indicates a base which is preferably a fiat piece of metal of certain width and length. In ordinary use it may be desirable to have a holder for receiving different width films and to answer this purpose a number of bases similar to base 1 may be provided, same being of different widths, and if desired of different lengths. Regardless of the width there is provided holding or clamping means 2 and 3 on the edges of base 1 as shown in Fig. 3. Each of these clamping means is provided with a back section or plate 4 and a pair of upwardly extending flanges 5 and 6, and a U- shaped construction 7 straddling the base 1 and pinching said base somewhat so as to be held thereon. Preferably on one end of the base a rounded looped metal member 8 is provided which may be soldered orotherwise rigidly secured in place to provide an easy turning end portion for the film, the same projecting beyond the ends of the members 2 and 3. A wire member 9 extends through this looped member, said wire member having hooks 10 and 11 for hooking over the side edges of the tank 12 when the holder is in the developing solution. Base 1 at the end opposite that carrying member 8 projects beyond the side holders 2 and 3 so as to receive the spool carrying frame 13. This frame is constructed preferably from a metal plate 14c bent twice upon itself at the section 15 so as to produce a groove into which the projecting end base 1 may fit so as to connect the frame to the base 1. In addition the plate 18 is bent back at 16 and formed with raised sections 17 and 18 for receiving the turned in arms 19 of the respective brackets 20, the opposite arms21 fitting over the edge 22 of the plate. Brackets are slidable back and forth on the frame while held in place preferably by friction, each bracket having an end 23 projecting therefrom so as to extend into the spool 24 when placed thereon.

In use, whenever it is desired to place a film on the holder the frame 13 is slipped over the end of the base 1 so that the parts will assume the position shown in Figs. 1 and 2, the filled spool 24 is then placed in position, or if desired may be placed in position previously. lVhen the parts are assembled as ust described the end of the film is grasped and moved beneath the flanges 5 of the clamping members or holders 2 and 3 and is pulled along base 1 with the edges sliding beneath said flanges. IVhen the looped member 8 is reached the film is passed thereover and is then threaded into the flanges 6 and the movement continued until all of the film has been removed from the spool 24. As soon as this has been done the frame 13 is removed, the same being held in place by friction. The holder and the film mounted thereon are then both submerged in the developing solution as indicated in Fig. 1 and the hook members 10 and 11 hooked over the sides of the tank. After the film been developed and washed in the usual manner and it is desired to remove the same either member 2 or 3, or both members may be moved later-.

ally off of the base 1 which will bodily release the film without injury.

If in using the device several films are used and they only vary slightly in,size members 2 and 3 may be forced tightly against the base 1 as shown in Fig. 3'or veloping solution.

'What I claim is 1'. A holder for'film's and plates during the time of development comprising a base, a pair of clamping members frictionally held on said base at the edges thereof, said clamping members having overhanging flanges for receiving films and plates, and means connected'with one end of'said base adapted to engage a tank for supporting the base and parts carried thereby when placed inatank.

' QQ'A film holder comprising a plate a pair'of holding members formed with U- shaped clips adaptedto straddle the edges of said base and rriotionally engage the preventin same so as to be held on the base thereby,

each of said holding members being formed with an overhanging .fiange on opposite faces of the base for receiving films, and means connected with one end of the base for supporting the same.

3. A film holder comprising a flat metal rectangular plate and a pair of holding members adapted to frictionally engage said plate along each longitudinal edge, each of said holding members comprising a U- shaped clampingstructure for engaging the plate, and a pair of overhanging flanges co -acting with said U-shaped' structure for holding a film in position."

" 4'. A fihn holder comprisinga rectangular flat metal plate, a pair of lb'o'dily removable holding members frictionally engaging the longitudinal edges of theplatefor holding afilm thereon, and alloo ped member connected with said plate at one end for over the e fid of the plate.

provided with a base, a pair of film holding members having overlapping flanges, of a frame connected with one end of said base,

and'a pair of adjustable brackets tor receiving'a roll of film and holding same in e creasing of the film when looped "5; The combination with a 'fihri holder line with the base as the film is 'slidingly' moved so that the edges be between said base and said flanges. f

CHARLES LOUIS BAMBBIQKK 

